Casement stay



May 27, 1924.

L. H. CLARK CASEMENT STAY Filed Oct. 21, 1922 Patented May 27, 1924.

eans s tar] a-Tear LESLIE HALWORTH CLARK, 0F AUCKLAND; New nALAN-nassrenon To HAROLD LESLIE BELL AND JOHN RICHARD HEBDIEN, BOTH orAUCKLAND, NEW ZEALAND.

creamer-S Application filed October 21, 1922'; serial No. 595,992.

To all whom it may concern:

B it known that I, LESLIE I VHALWO'RTH CLARK, a subject ofthe King ofGreat Britain, residing at Ko'himara'ma, Auckland, New Zealand, haveinvented a new and useful Improved Casement Stay, of which the followingis a specification.

My invention relates to the ordinary type of window casement stay inwhich a stay bar is employed and hinged to the window casement andis"combined with a locking pin that is fixed to the window frame so that itmay be locked to such pin at any point along its length. The inventionrelates more particularly to that class of stay in wh ch the bar isformed with apertures in it at 1ntervals, each of which is adapted topass over the locking pin on the window frame.

Hitherto these stay bars have generally been formed in one rigid length,so that when the casement is partially, or fully, closed, the barprojects inwards into the room and forms an obstruction against theproper hanging of curtains or window blinds. The object of my inventionis to provide ..a construction of bar that, when drawn in eitherpartially or wholly, may be allowed to hang vertically down against thewall beneath the window frame and thus be free from the possibility ofobstructing the blinds or curtains in the manner referred to.

The invention therefore consists in constructing the bar with a hingeattachment to the bracket by which it is fixed to the sash, such hingebeing of a nature such as to form a universal joint to allow of the barbending or hanging from any angle, combined with the construction of thebar of two lengths arranged end to end to form the whole bar, andpreferably each formed by about half the length of the full bar. Thesetwo lengths are hinged together in such a manner that the inner end iscapable of turning down on the outer end, and the hinge is soconstructed that when the two lengths are turned into a continuousplane, they may be locked together to form a rigid stay to be used whenthe casement is opened to half, or more than half, its intent.

This construction is illustrated in the accompanying drawings, in whichFigure '1 is a side elevation of the stay,

Figure 2 is a plan thereof, and

Figure 3 a longitudinal sectional elevation through the'hinge connectingthe two parts of the stay together.

In carrying out the invention, the stay is made up of two lengths A andB joined end to end andflthe outer of which lengths, A, has'its outerend connected to the bracket plate 0 by means of which the stay isattachedg he e e e t shf m n t usual way, by the universal joint D. Thisj in i j's d igned s to p rmi the y swingingdown' vertically for itsfull length when the sash is'closed, and also to provide for the stayassuming the varying angles horizontally that are required when stayingthe sash in its more or less opened positions.

The hinge joint by means of which the two lengths A and B are connectedtogether is made by forming the length A with a medial slot E extendinglongitudinally from its extremity and by forming the adjacent end of thelength B with a tongue F projecting longitudinally therefrom, that fitsneatly into the slot E. A pivot pin G is then passed through theoverlapped joint thus formed so that the length B may turn up and downin the vertical plane. The tongue F lies wholly within the slot E whenthe length B is positioned straight with the length A.

The two lengths are designed to be locked rigidly in the same plane bymaking the pin G to slide longitudinally through the joint and informing it with a second leg G that is designed to be pushed intoapertures H formed respectively in the tongue and slot sides at adistance from-the pivot point. These apertures H come into coincidencewhen the length B is straightened so that the leg G may then be pushedinto them, thereby forming with the pin G, a lock to keep the length Bfrom turning. The pin G is made long enough to permit of the leg G beingdrawn out of these apertures when it is required to turn the length Bdown, and to limit this sliding movement and prevent the completewithdrawal of the pivot, the back end thereof is made with a head 9 asshown in Figure 2.

This joint may be rendered still more rigid by forming the tongue F withan extension F' beyond its end and of a depth of about half the depthof'the tongue and by forming the top of the length A with a groove Eextending in from the end of the slot, into which groove the extensionF" will enter when the length B is straightened out.

It will be readily understood that when the sash on which the stay isfitted is being retained open at hall, or less, of its opening range,the length A will be carrying the strain, so that the length B may thenbe turned vertically down to lie neatly against the wall beneath thecasement frame, by merely drawing out the pin G and allowing the lengthB to drop. When the sash is to be stayed at more than half open, thelength 13 is turned up and made rigid with thelength A in the mannerdescribed.

I claim 1. A casement stay comprising two sections movable relative toeach other, a movable pivot pin pivotally connecting the said sectionsat their inner ends and provided with a bent portion adapted to engageregistering apertures in the said sections For looking the same inposition when aligned.

2. A- casement stay comprising two relatively movable sections, onehaving a slot at its inner end, a tongue at the inner end of the othersection adapted to fit into said slot, and a movable pivot pin pivotallyconnecting the said sections at their inner ends passing throughregistering apertures in said sections and having a bent portion adaptedto pass through a second set of registering apertures when the saidsections are in alignment, thereby locking said sections in position.

3. A casement stay as specified in claim 2, in which the said tongueis'provided with an extension adapted to enter a groove eX- tending fromthe end of the slot in the other section.

In testimony whereof, I afliX my signature.

KATHERINE ALLIsoN BROADLEY, DAVID BROWN HUTToN.

